:root {
  color-scheme: light;
  --bg-color: #f9fafb;
  --card-color: #ffffff;
  --text-color: #111827;
  --muted-text-color: #6b7280;
  --border-color: #e5e7eb;
  --accent-color: #111827;
  --accent-hover-color: #000000;
  --x-bg: #111827;
  --x-bg-hover: #000000;
  --instagram-bg: #f97316;
  --instagram-bg-hover: #ea580c;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.page-header,
.links,
.page-footer {
  width: 100%;
  max-width: 420px;
}

.page-header {
  background-color: var(--card-color);
  border-radius: 20px 20px 0 0;
  border: 1px solid var(--border-color);
  border-bottom: none;
  padding: 24px 20px;
  text-align: center;
}

.page-title {
  margin: 0 0 4px;
  font-size: 1.6rem;
  letter-spacing: 0.03em;
}

.page-subtitle {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted-text-color);
}

.links {
  background-color: var(--card-color);
  border: 1px solid var(--border-color);
  border-top: none;
  border-bottom: none;
  padding: 16px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.link-button {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  text-decoration: none;
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: background-color 0.18s ease, transform 0.1s ease,
    box-shadow 0.18s ease;
  box-shadow: 0 4px 10px rgb(15 23 42 / 0.1);
}

.link-button:active {
  transform: translateY(1px);
  box-shadow: 0 2px 5px rgb(15 23 42 / 0.15);
}

.link-x {
  background-color: var(--x-bg);
}

.link-x:hover {
  background-color: var(--x-bg-hover);
}

.link-instagram {
  background-color: var(--instagram-bg);
}

.link-instagram:hover {
  background-color: var(--instagram-bg-hover);
}

.link-label {
  line-height: 1;
}

.page-footer {
  background-color: var(--card-color);
  border-radius: 0 0 20px 20px;
  border: 1px solid var(--border-color);
  border-top: none;
  padding: 10px 20px 14px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted-text-color);
}

@media (min-width: 640px) {
  .page {
    padding: 40px 16px;
  }

  .page-title {
    font-size: 1.8rem;
  }

  .link-button {
    font-size: 1.02rem;
  }
}